.banner{
    height: 500px;
}
.banner1 {
    background-image: url(../img/banner.jpg);
}
.banner2 {
    background-image: url(../img/banner2.jpg);
}
.banner3 {
    background-image: url(../img/banner3.jpg);
}
body{
    background: url("../img/banner4.jpg");
    background-size: cover;
    background-repeat: no-repeat;
    margin: auto;
}
*{
    margin: 0;
    padding: 0;
    list-style: none;
    text-decoration: none;
}
@media (max-width: 600px) {
    .banner{
        height: 200px;
        background-size: 100% 300px;
        background-repeat: no-repeat;
    }
}
footer{
    background: white;
    padding-top: 70px;
    padding-bottom: 70px;
}
.card .card-text{
    height: 30px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
footer a{
    font-size: 14px;
}